Apply CAN functionality in UART bootloader

[khlee11]

The development environment is
MPLAB X 6.20
XC32 Compiler
MCU: PIC32MZ2048EFH144

I applied the UART bootloader and developed the application.
Due to the need, we would like to apply the CAN module to the application.
However, the CAN function applied to the application is not reflected in the UART bootloader environment.
The same is true of I/O settings.

So I've done both input/output and function port settings in the bootloader pin settings before.
And I confirmed that it works by setting the same on the application.

However, if you apply CAN-related settings, you will not move from the bootloader to the application.

I don't even get an error in compilation and I don't know what the problem is.

Can you check the procedures and methods to enable CAN functionality in UART bootloader?